s when he was running, so did not have the energy of richard nixon in 1960, or obama running in 2008 and so on. >> and mrs. eisenhower, a lot has been written about your parents' relationship with the eisenhowers. how do you describe it? >> i think that one of the things i enjoyed doing when i was working on the project of eisenhower's retirement years, was to look at that relationship and to think about it more, and i'm amazed that eisenhower and nixon got along as well as they did. you have two presidents, rumbling around together. a president is going to be someone who is very driven, as an agenda, device eighten hour, and richard nixon as 39 becomes his vice president, who already is showing signs he is on his way. so the fact they got along as well as they did is a testament to self things, but i think eisenhower should be praised because eisenhower made the vice-presidency significant. the sent my parents to 53 nations around the world as goodwill ambassadors. they were the vietnam in 1953, 53 nations, because he believed in person to person diplomacy, and my father liked that.